```html
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>数据库索引技术指南</title>
    <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/6.4.0/css/all.min.css">
    <link rel="stylesheet" href="https://cdn.staticfile.org/tailwindcss/2.2.19/tailwind.min.css">
    <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet">
    <style>
        body {
            font-family: 'Noto Sans SC', Tahoma, Arial, Roboto, "Droid Sans", "Helvetica Neue", "Droid Sans Fallback", "Heiti SC", "Hiragino Sans GB", Simsun, sans-serif;
            background-color: #f8fafc;
            color: #1e293b;
        }
        .hero-gradient {
            background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
        }
        .card-hover {
            transition: all 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        .index-icon {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            margin-bottom: 1rem;
        }
        .drop-cap:first-letter {
            float: left;
            font-size: 4rem;
            line-height: 0.8;
            margin: 0.15em 0.1em 0 0;
            color: #6366f1;
            font-weight: 700;
        }
    </style>
</head>
<body class="antialiased">
    <!-- Hero Section -->
    <section class="hero-gradient text-white py-20 px-4 md:px-0">
        <div class="container mx-auto max-w-6xl px-4">
            <div class="flex flex-col md:flex-row items-center">
                <div class="md:w-1/2 mb-12 md:mb-0">
                    <h1 class="text-4xl md:text-5xl font-bold mb-6 leading-tight">
                        数据库索引<br>
                        <span class="text-indigo-200">性能优化艺术</span>
                    </h1>
                    <p class="text-xl md:text-2xl text-indigo-100 mb-8 leading-relaxed drop-cap">
                        索引的选择和设计需要根据具体的应用场景和查询需求来决定。每种索引类型都有其独特的优点和适用范围，正确地使用和管理索引可以显著提升数据库的性能。
                    </p>
                    <div class="flex items-center">
                        <div class="w-12 h-1 bg-purple-300 mr-4"></div>
                        <p class="text-purple-200">平衡存储开销与写入性能</p>
                    </div>
                </div>
                <div class="md:w-1/2 flex justify-center">
                    <div class="relative w-full max-w-md">
                        <div class="absolute -top-10 -left-10 w-40 h-40 bg-purple-300 rounded-full mix-blend-multiply filter blur-xl opacity-70"></div>
                        <div class="absolute -bottom-10 -right-10 w-40 h-40 bg-indigo-300 rounded-full mix-blend-multiply filter blur-xl opacity-70"></div>
                        <div class="relative bg-white bg-opacity-10 backdrop-filter backdrop-blur-lg rounded-2xl p-8 shadow-2xl">
                            <div class="text-center">
                                <i class="fas fa-database text-5xl text-white mb-6"></i>
                                <h3 class="text-xl font-bold mb-4">8种核心索引技术</h3>
                                <p class="text-indigo-100 mb-6">了解不同索引的特性与应用场景，为您的数据库选择最佳方案</p>
                                <div class="grid grid-cols-4 gap-2">
                                    <div class="bg-white bg-opacity-20 rounded-lg p-2 text-xs">B+树</div>
                                    <div class="bg-white bg-opacity-20 rounded-lg p-2 text-xs">哈希</div>
                                    <div class="bg-white bg-opacity-20 rounded-lg p-2 text-xs">位图</div>
                                    <div class="bg-white bg-opacity-20 rounded-lg p-2 text-xs">全文</div>
                                    <div class="bg-white bg-opacity-20 rounded-lg p-2 text